Home / 7,426.86-11,139.93-2,809.50

Finding the Fourth Proportional to 7,426.86, 11,139.93 and 2,809.50

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Solution

The fourth proportional to 7,426.86, 11,139.93 and 2,809.50 is: 4,214.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,426.86 : 11,139.93 = 2,809.50 : x
  2. Step 2: Convert to fraction form
    7,426.86/11,139.93 = 2,809.50/x
  3. Step 3: Cross multiply
    7,426.86x = 11,139.93 × 2,809.50
  4. Step 4: Simplify right side
    7,426.86x = 31,297,633.34
  5. Step 5: Solve for x
    x = 31,297,633.34/7,426.86
  6. Step 6: Final answer
    x = 4,214.11

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.